如何制作UIImagePickerController StatusBar lightContent样式？

Question

当我呈现ImagePickerController时，statusBar文本颜色仍为黑色，如何制作这样的颜色？

Answer 1

只需三步：

1：将UINavigationControllerDelegate，UIImagePickerControllerDelegate添加到您的

@interface yourController ()<>

2：imagePickerController.delegate = self;

3：

-(void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
}

Answer 2

通过为UIImagePickerController编写扩展来快速解决方案：

extension UIImagePickerController {
    convenience init(navigationBarStyle: UIBarStyle) {
        self.init()
        self.navigationBar.barStyle = navigationBarStyle
    }
}

然后你可以在初始化时设置颜色：

let picker = UIImagePickerController(navigationBarStyle: .black)    // black bar -> white text

替代方案（受folse's answer启发）：正常初始化UIImagePickerController时，将此类设为委托（picker.delegate = self）并实现此功能：

func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
    if navigationController is UIImagePickerController {        // check just to be safe
        navigationController.navigationBar.barStyle = .black    // black bar -> white text
    }
}

Answer 3

在Swift和iOS 9中，不推荐使用setStatusBarStyle。你可以继承控制器。

private final class LightStatusImagePickerController: UIImagePickerController {
    override func preferredStatusBarStyle() -> UIStatusBarStyle {
        return .lightContent
    }
}

Answer 4

我有同样的问题需要管理在不同的iOS版本下运行的应用程序。

UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

if(IS_IOS8_AND_UP) {
    imagePickerController.modalPresentationStyle = UIModalPresentationFullScreen;
} else {
    imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
}

imagePickerController.delegate = self;
[self presentViewController:imagePickerController animated:YES completion:nil];

代表：

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    /* Cancel button color  */
    _imagePicker.navigationBar.tintColor = <custom_color>
    /* Status bar color */
    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
}

Answer 5

使用上面的答案，以下内容对我有用：

实施 UINavigationControllerDelegate, UIImagePickerControllerDelegate UIViewController imagePickerController.delegate = self; 并设置

-(void) navigationController: (UINavigationController *) navigationController willShowViewController: (UIViewController *) viewController animated: (BOOL) animated { 
    navigationController.navigationBar.barStyle = UIBarStyleBlack;
}

添加以下方法：

h5py

Answer 6

我遇到了类似的问题，发现解决此问题的最干净方法是像这样在preferredStatusBarStyle的扩展名中覆盖UIImagePickerController。该主体可以很好地应用于第三方库。

extension UIImagePickerController {
    open override var preferredStatusBarStyle: UIStatusBarStyle {
        if isLightTheme() {
            return .default // black text
        }
        return .lightContent // white text
    }
}

isLightTheme()只是确定该控制器中NavigationBar是浅色还是深色的函数。

Answer 7

这是我能想到的最快的解决方案。创建以下类别：

@implementation UIImagePickerController (LightStatusBar)

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return UIStatusBarStyleLightContent;
}

@end